diff --git a/kms/package.json b/kms/package.json
index 8ef9ec6490..7355903625 100644
--- a/kms/package.json
+++ b/kms/package.json
@@ -19,7 +19,7 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "execa": "^1.0.0",
-    "mocha": "^5.2.0",
+    "mocha": "^6.0.0",
     "uuid": "^3.2.1",
     "yargs": "^13.0.0"
   }